One way to remember National Puppy Day is to take a look back at some of the great dogs that have graced this Earth. Dogs that were war heroes. Dogs that were saints. Dogs that were astronauts. And dogs that captured the hearts of nations.

Sgt. Stubby
A war dog from World War I, Stubby was the dog version of G.I. Joe. He was a badass in every sense of the word. He was in 17 battles, single-handedly captured a German spy, warned his unit of poison gas attacks (thanks to his acute sense of smell after getting gassed) and incoming shell. He became the only dog in U.S. military history to earn the rank of Sergeant in battle. After the war, he met several Presidents and was Georgetown’s mascot. After passing away, he was honored with a brick at the World War I memorial and his remains were sent to the Smithsonian. ...http://mancavedaily.newyork.cbslocal.com/2012/03/23/celebrate-national-puppy-day-with-historys-greatest-dogs/